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GIW. SYLVESTER.

FILTER FOR PBTROLEUM.

-No.-60,593, Patented Dec. 18, 1866.

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GEORGE W. SYLVESTER, OF N EWARK, NEW JERSEY.

Letters Patent No. 60,593, dated December 1 8. 1866.

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Bc'it known that I, GEORGE W. SYLVESTER, of the cityr of Newark, State of Now Jersey, have invented an improved Filter-ing Apparatus for Petroleum. V

- Experience having proved that by simple percolation the oil` passes so rapidly through the filtering material that it has no time to exert its full influence on 'the oil the nature of my invention consists in keeping the oil for a sufiicient length of time in contact with the filtering material, of compelling the crude oil to traverse back and forth through parallel diaphragms, and of a-ssisting the Whole 'operation by the introduction ofl heated air at the bottom ofthe'filter. v

I declare that the follouringis a full and exact description of my inventon, which will enable others skillful in those matters to make and use it, reference being had to the accompanying drawing.

Figur-e 1. a b c d represent a tank, the bottom of which is made to slightlp,1 ineliue towards the stop-cock,

'8, which is placedsat its lcwest-point, the support on which the tank stands being made .tniconform' to the'inclhv nation of the bottom of the tank, so that the tank may stand perpendicular. n m and l k and g h are slightly inclined diaphr'agms, with holes at m Z and h, provided so as to compel the crude oil to pass horizontally, back and forth, through the filtering material. c f b g is a p'erforated screen, lying` parallel with a diaphragm, and supported by cross-pieces E F, E G, E C, as many as may be necessary, and radating from the stop-cock S, as

representecl by Figure 2. The cross-pieces serve the purpose of Supporting the screen with its superincumbent v weight, and admit free passage of oil to the stop-cock S. The diaphragms and screen maybe made'to fit nicely the filter', and removable at pleasure for cleaning, or made permanently fast to ther body of the filter'. u is a tube running to the bottom and'opening beneath the screen for thepurpose of permitting a current of hot air to be forced through the whole mass, from the bottom upward, as by this means the clarification, which is due to chemical action, is faclitated both by agitation and heat.

What I claim as my invention, and (lesire to secur'e by Letters Patent, is-

1. A petroleum-filter so nrranged as to keep the crude oil in prolongod contact with the filtering material and to admit of the clarified oil being drawn off bya stop-cock or its equivalent, substantially asherein set forth.

2. Parallel diaphragms or their equivalent serving to lengthen the pathway of' the descending oil, substantially as herein arranged and for the purposes set forth.

3. The introduction of a current of heated air into the bottom, so as to permeate 'and agitate the Whole mass, and assist chemical action.

4; The perforated screen cfb g with its radiating supports, used as in the manner described and for the purposcs set forth.

In testimony whereofI have signed my name to this spccification in the presence of two subscribing witnesses.

GEO. W. SY'LVESTER.

Witncsscs:

IsAIAn W. SYLVESTER, Josnrn BEcsEY. 

